Table 1.
Distribution of the male athletes' birth month and the results of the statistical analyses.
| Quartile distribution (CD) | Quartile and number and percentage of players | ||||||||
|---|---|---|---|---|---|---|---|---|---|
|
Q1: 24.5% |
Q2: 23.3% |
Q3: 26.4% |
Q4: 25.9% |
Total | χ2 (df = 3) | p | Cramer's V |
Q1 vs. Q4: OR (95% CI) |
|
| Gymnastics (%) | 8 (44.44) |
4 (22.22) |
3 (16.67) |
3 (16.67) |
18 | 4.17 | 0.24 | 0.34 | 2.82 (0.44–18.08) |
| Expected | 4.41 | 4.19 | 4.75 | 4.65 | |||||
| Judo (%) | 53 (30.29) |
44 (25.14) |
46 (26.29) |
32 (18.29) |
175 | 6.57 | 0.09 | 0.14 | 2.82 (0.95–3.21) |
| Expected | 42.86 | 40.70 | 46.09 | 45.285 | |||||
| Swimming (%) | 38 (36.54) |
26 (25.00) |
24 (23.08) |
16 (15.38) |
104 | 11.16 | 0.01* | 0.23 | 2.51* (1.13–5.56) |
| Expected | 25.47 | 24.19 | 27.45 | 26.89 | |||||
| Residual | 12.53 | 1.91 | −3.45 | −10.89 | |||||
| Tennis (%) | 41 (32.28) |
26 (20.47) |
30 (23.62) |
30 (23.62) |
127 | 4.2 | 0.24 | 0.13 | 1.44 (0.73–2.85) |
| Expected | 31.10 | 29.54 | 33.52 | 32.84 | |||||
| Track and field (%) | 7 (12.07) |
18 (31.03) |
18 (31.03) |
15 (25.86) |
58 | 5.64 | 0.13 | 0.22 | 0.49 (0.16–1.56) |
| Expected | 14.20 | 13.49 | 15.30 | 15.00 | |||||
| Basketball (%) | 54 (34.18) |
40 (25.32) |
35 (22.15) |
29 (18.35) |
158 | 10.86 | 0.01* | 0.19 | 1.97* (1.05–3.69) |
| Expected | 38.70 | 36.75 | 41.70 | 40.86 | |||||
| Residual | 15.30 | 3.25 | −6.70 | −11.86 | |||||
| Soccer (%) | 87 (40.47) |
41 (19.07) |
47 (21.86) |
40 (18.60) |
215 | 30.14 | 0.00* | 0.26 | 2.30* (1.35–3.91) |
| Expected | 52.66 | 50.00 | 56.75 | 55.60 | |||||
| Residual | 35.34 | −9.00 | −9.75 | −15.60 | |||||
| Team handball (%) | 16 (31.37) |
18 (35.29) |
6 (11.76) |
11 (21.57) |
51 | 8.66 | 0.03* | 0.29 | 1.54 (0.52–4.57) |
| Expected | 12.49 | 11.86 | 13.46 | 13.19 | |||||
| Residual | 3.51 | 6.14 | −7.46 | −2.19 | |||||
| Water polo (%) | 5 (14.29) |
12 (34.29) |
10 (28.57) |
8 (22.86) |
35 | 3.50 | 0.32 | 0.22 | 0.66 (0.15–2.83) |
| Expected | 8.57 | 8.14 | 9.24 | 9.05 | |||||
| Volleyball (%) | 18 (27.27) |
16 (24.24) |
15 (22.73) |
17 (25.76) |
66 | 0.57 | 0.90 | 0.07 | 1.12 (0.43–2.89) |
| Expected | 16.16 | 15.35 | 17.42 | 17.07 | |||||
| Total | 327 | 245 | 234 | 201 | 1,007 | ||||
Q1: January–March; Q2: April–June; Q3: July–September; Q4: October–December.
CD, census data.
*
p ≤ 0.05.